Method and means for sizing yarn



Sept. 14, 1937. A, J -r 2,093,294

METHOD AND MEANS FOR SIZING YARN F iled June 29, 1956 2 Sheets-Sheet l ENTOR? A. J. TANT atmam Sept. 14, 1937. A. J. TANT METHOD AND MEANS FOR SIZING YARN Filed June 29, 1936 2 Sheets-Sheet 2 WT MM T Patented Sept. 14, 1937 U N i l METHGD AND MEANS FOR SIZING YARN Andrew J. Tant, Central, S. 0.

Application June 29, 1936, Serial No. 87,975

5 Claims.

This invention relates to an apparatus used in sizing yarn and more especially to means disposed between the sizing vat and the drying cylinders for separating the strands before the same are dried. In conventional slashers it has been the practice to direct the Warp ends from one or more warp beams through a sizing solution and then over suitable drying drums, after which the ends from the respective warp beams are separated by lease rods. As a result in the drying operation the strands become glued together and when separation is eifected there is a pronounced tendency for the sizing to flake off and also for the strands to break It is therefore, an object of this invention to provide in a slasher means "for forming a shed with said means being disposed between the sizing vat and the drying apparatus so that the ends may be separated before drying. This separating means makes it easier to separate the ends after they have been passed over the drying means, thereby reducing shedding of the sizing and the breakage of the ends and also reducing the amount of tension applied to the yarn.

It is a further object of this invention to provide a structure of the class described comprising a pair of separated rods rotatably mounted between the sizing vat and the drying means to allow one-half of the yarn to pass over the upper rod and one-half to pass beneath the lower rod. This arrangement has a decided advantage over a single rod for effecting the separation since the upper portion of the yarn drives its rod in one direction and the lower portion drives its rod in an opposite direction. If there were only one separation rod, there would practically be no rotation of the rod, resulting in an increased friction and the lodging of the sizing on said rod.

It is a further object of this invention to provide means associated with a slasher whereby the yarn can be subjected to much less tension than has heretofore been necessary in the sizing operation, thus resulting in yarn of much higher grade, fewer broken ends and much more elasticity in the yarn than has been possible with old methods of sizing the yarn.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which:-

Figure 1 is a side elevation of a slasher showing the invention applied thereto;

Figure 2 is a plan view of Figure 1;

Figure 3 is an isometric view of a portion of a slasher showing the invention associated therewith;

Figure 4 is an enlarged detail showing one of the brackets for rotatably supporting one end of the separation rods;

Figure 5 is a vertical sectional view taken along line 5-5 in Figure 4.

Referring more specifically to the drawings the numerals Ill and l i denote suitable supports which have rotatably mounted therein the ends of warp beams l2 and it around which yarn is wound. When it is desired to treat the yarn with a sizing solution the beams are placed in the supports I!) and H and the warp it is drawn therefrom and over rolls l6 and Il which are rotatably secured to sizing vat 18. The warp is then drawn beneath immersion roll 19 and between squeeze rolls 2% and 2! and also between another pair of squeeze rolls 22 and 23, said rolls being rotatably secured to sizing vat l8. 20

The warp is then divided by rods 28 and 29 into two layers 26 and 21!, the layer 26 passing over rod 28 and the layer 21 passing beneath rod 29. Rod 28 has its ends rotatably mounted in brackets 3E and 33 which are adjus-tably secured to the vertical legs of brackets 32 and 33 by any suitable means such as bolts 34 and 35 which penetrate holes in said members 39 and 3! and also slots 36 and 3! respectively in the vertical legs. The rod 29 is rotatably mounted in brackets 39 and 40, which, in turn, are adjustably secured to the vertical legs of brackets 32 and 33 by any suitable means such as bolts 42 and 43 respectively. Each of brackets 30, 3!, 39 and 46 has a pair of projections such as 30a projecting therefrom and ex- 35 tending into slots 35 or 3'! to prevent rotative movement of the brackets relative to supporting brackets 32 and 33. Brackets 32 and 33 have slots 44 and 35 in the outstanding legs thereof, which slots are penetrated by bolts 46 and 41 40 respectively for adjustably securing the brackets to the side frames 48 and 49 of the slasher.

The divided portions or layers 26 and 21, then partially encircle a drying drum 5!! which has its ends rotatably mounted in the frames 4'! and 48. After passing around drum 5%? the warp passes around a second drum 5! which likewise has its ends rotatably mounted between frames 48 and 49 from whence the warp is directed beneath a roll 52 and over another roll 53. When the layers 50 25 and 27 reach the drum 5!! they are again united into a single warp sheet 54 and are dried in this manner. The two layers of warp threads will not again adhere to each other when they are formed into a single sheet at drum 50 for the reason that the rate of travel of the warp is slow and as it passes above drum 5| the heat partially dries the warp threads and prevents their re-uniting by adhesion. When the warp'sheet 54 passes roll 53 it is necessary to again separate the ends according to the manner in which they were unwound from their respective warp beams. In order to accomplish this result a lease rod 55 has its ends mounted in forked members 56 and 51 which L the portions 59 and 60 separate at 61 which is located at a substantial distance to the right of lease rod 55. In the conventional sizing apparatus where the warp is not separated before dryin-g, the separation point 61 will be located at a point very much closer to the lease rod 55, thus indicating that the warp ends have been glued together during thedrying operation.

By separating the yarn before drying, the yarn passes through the slasherfunder lesstension, which will allow more elasticity to remain in the yarn, which, in turn, 'will make'the yarn run more satisfactorily on the looms. Also, the separation of the yarn after drying is not nearly so difficult, thereby insuring that fewer ends will break resulting in fewer stops of the slasher and subsequent machinery in which the yarn is processed.

In the drawings and specifications there has 2 been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense-only, and not for purposes of limitation, the scope. of the invention being set forth in the appended claims.

I claim:

1. Apparatus forapplying sizing to yarn comprising a web supply roll, a sizing vat through which the yarn is passed to apply sizing thereto, a pair of spaced parallel rods for forming a shed in the yarn after the sizing has been applied thereto and being rotated in opposite directionsby. contact with the two layers of the shed, a

series of heated drums over which the yarn is' passed to dry thesame, and a lease rod for forming a shed in the yarn after it is dried.

2. Apparatus for applying sizing to yarn comdrying rolls, and a'pair of rotatable rods forming a shed in the yarn after the sizing has been applied thereto and before the yarn reaches the drying rolls, saidrods being rotated by contact with the yarn so that the surface'of the rods which is being contacted by one portion of the shed will move in the same direction as the yarn.

'4.In combination, a slasher having asizing vat and drying rolls and means for passing yarn in sheet form through said vat and over said a drying rolls, a pair of spaced, parallel rods rotatable by contact with Jtheyarn for forming a shed in the yarn after the sizing has been applied thereto and rolls.

5. In combination, a slasher havinga sizing vat and a first drying roll and a second drying roll, means for passing yarn through said sizing vat and above the second drying roll and over'the first drying roll and 'reversely over the second drying roll, a pair of rotatable rods disposed 'between the second drying roll and the sizing vat for forming a single shed in the yarn and whereby the. yarn will be partially dried by the heat from the second drying roll before it comes in contact by contact with the yarn disposed against said rods.

before thesame reaches the drying 910 'with the first drying roll, said rods being rotated ANDREW J. TAN'I. 

